2 published verifications about Homo sapiens Homo sapiens ×
“More than 3,000 human genes show sex-specific expression patterns in the human brain.”
Recent high-quality research directly supports the 3,000+ figure: a 2025 single-cell study of the human cerebral cortex reports "over 3,000 unique genes" with sex-biased expression, and independent transcriptomic analyses corroborate counts in this range. However, the claim's unqualified framing omits important context — the number varies substantially by developmental stage (dropping to roughly 1,000 in the adult forebrain), brain region, and methodology, and cross-study consensus on which specific genes are sex-biased remains limited.
“The Tyrannosaurus Rex lived closer in time to modern humans than to the Stegosaurus.”
This claim is true and well-established in paleontology. Stegosaurus lived ~150 million years ago, while T. rex lived ~68–66 million years ago — a gap of ~80–84 million years. T. rex went extinct ~66 million years ago, and modern humans appeared ~300,000 years ago — a gap of ~66 million years. Since 66 million years is less than 80–84 million years, T. rex indeed lived closer in time to us than to Stegosaurus. Multiple authoritative sources, including USGS and the Natural History Museum, confirm this.